oe cleveland



Dec. 27, 1927.

' J. S. REID DRUM AND BAND STRUCTURE Original Filed Sept. 7, 1926 72u55 REID Gufo: netto.

Fetented Dec. 27, 1927.

UNITED STATES PATENT OFFICE.

JAMES S; REID. O1 CLEVELAND. OHIO. ASSIGNOR TO THE ,NEELL THOMPSON MFG. CO., OF CLEVELAND. OHlO, A CORPORATION OF OHIO.

DRUM ANI) BANDSTRUCTURE.

Application filed September 7. 1926. Serial No. 134,066.

This invention relates' to improvements in drinn and band structures. such as aro used. t'or example, in braking inecluinisui and shock absorber' devices- Ator motor vehicles.

The object ot the pres-'en'. invention is' to provide an improved drinn and band structure in which either the drum or the band member is provided with a serie ot con tainers adapted t'or trictional engagement with the other member. said containers beingl of softer metal than the member engaging therewith so that the wear resulting `from said frictional engagement will be borne by said containers` which can be easily and inexpensively replaced. when nccefsary. These containers are adapted to hold a suitable lubricant, so that all necessary parts of the structure will be easily and inexpensively maintained in a well lubricated condition.

Further objects oit the invention are in part obvious and in part will appear more in detail hereinafter.

In the drawing, Fig. l is a vertical sectional view of a drum and band structure embodying my invention; Fig. 2 is a side elevation thereof, part being broken away and in section for clearness ot illustration; Fig. 3 is a view similar to Fig. l and showing a modification; Fig. 4 is a detail sectional view showing a still 'further modification.

The structure illustrated in the drawing includes a metal drum l. ot any suitable size and shape, and 2 represents a flexible metal band adapted for co-oneration therewith. Such a structure is adapted for varied use7 two particular uses thereof being in braking mechanism and in shock absorber devices tor nio'tor vehicles. For purposes ot' illustration. the druni is shown as ol' cup-shape and the flexible metal band is shown as siii'- rounding a` inajor portion ol the circumtcrence. of said drum.

Either the metal drum or the tlcxible metal band is provided with a series ot' suitable lubricant carrying containers7 and in the embodimentillnstiated iu Fig. l. the flexible metal band 2 is provided with a series ot closely spaced hollow rivets 3. These rivets extend inwardly from said band and are adapted for trictional engagement with the metal drum l. said rivets being ot brass or other metal ot setter composition than the metal of the drinn l, which may be Renewed .Tune 11, 1927.

iliade of steel. tor example. Therefore, the wear rc.--iilting troni the Ylrictional engage nient of said rivets and the drum will be borne by said rivets. which may be easily and inexpensively replaced, when necessary. The chambers or cavities ot said rivets are adapted to hold graphite or other suitable lubricant. so that all necessary parts Ot the structure are easily and inexpensively1 maintained. in a proper lubricated condition.

The present drawings show the lubricant carrying containers arranged in two anniilar rows. but any other suitable spacing or arrangement may be employed, it being only necessary to provide a sufticient number of containers and space them close enough together that proper trictional engagement can be had with the member co-operating therewith.

In the embodiment of the invention illustrated in Fig. 3, the metal drinn l, rather than the flexible metal band 2n. is provided with the lubricant carrying containers. In this torni of the invention said containers are simple cup-shaped member 6 which are partially pressed down with a snug lit into suitable apertures 7 in the metal drum, and which project outwardly from said drinn a snllicient amount for trietional engagement with the flexible metal band. These receptacles, just as the hollow rivets 3. are adapted to be filled with lubricant and are likewise made ot brass or other metal softer than the metal ot the flexible band 9,", so that they will bear the wearing e'llects ot the Vtiictional engagement.

Vln the embodiment ot the invention il lustrated in Fig. 4t. cup-shaped lubricant carryingcontainers 8 are employed, just as in Fig. il. and are likewise nioiinted in the inelal drinn l", rather than in the tlexible nietal baud 2h. "lowever, in Fig. -l the metal ot the drinn surrounding the apertures 7", in which said containers seat. is bent upwardly in the forni ot annular flanges 8, is clearly indicated in the drawing. Any suitable manner ot securing or mounting` the lubricant carrying containers in the nietal drinn or in the ilexible metal band may be employed, the liorins shown in the drawing. being simply tor purpose of illustration.

From the foregoing. it will be seen that .l have provided a drum and band structure whichis maintained in a well lubricated condition by lubricant carrying containers fill lill) 

